New KiCAD OSHW PCB project – Breakboard for ADS1220 Low Power 24-bit ADC

ADS1220 is four channel 24-bit precise Sigma-Delta ADC with these features:

• Low Current Consumption 120 µA in Duty-Cycle Mode
• Wide Supply Range: 2.3 V to 5.5 V
• Programmable Gain: 1 V/V to 128 V/V
• Programmable Data Rates: Up to 2 kSPS
• Up to 20-Bits Effective Resolution
• Simultaneous 50-Hz and 60-Hz Rejection at 20 SPS with Single-Cycle Settling Digital Filter
• Two Differential or Four Single-Ended Inputs
• Dual Matched Programmable Current Sources: 10 µA to 1.5 mA
• Internal 2.048-V Reference: 5 ppm/°C (typ) Drift
• Internal 2% Accurate Oscillator
• Internal Temperature Sensor: 0.5°C (typ) Accuracy
• SPI-Compatible Interface (Mode 1)

The PCB is made with KiCAD and files are uploaded on GitHub with Apache 2.0 Licensee.

Software examples how to use BB-ADS1220 with OLIMEXINO-32U4 (Arduino Leonardo) and A20-OLinuXino-MICRO are available as reference.